Can't pull from origin and push to branch on a GitHub repo after update.

Running SourceTree V1.6.24.0. After the update this morning I am unable to push to my master or pull from it.

I get an authentication error however if I go to view -> Show Hosted Repositories I can see the repo and it seems that SourceTree is logging in to the account in question. Please help I cant commit any of my code at the moment.